Pipe-pit.



J. R. MuWANE. PIPE PIT.

APPLICATION TILED K0118, I909.

THE NORRIS Pursues co., WASHINGTON, a. c

Patented Aug. 9, 1910.

2 BHEBTS-SHEET 1 J. R. MuWANB. PIPE PIT.

APPLICATION FILED NOV. 18, 1908. 967,038. Patented Aug. 9, 1910.

2 SHEETS-SHEET 2.

JAMES R. MQWANE, OF BIRMINGHAM, ALABAMA.

PIPE-PIT.

Specification of Letters Patent.

Patented Au. 9, 1910.

Application filed November 18, 1909. Serial No. 528,749.

To all whom 'it may concern:

Be it known that I, JAMns R. MCWANE, a citizen of the United States,residing at Birmingham, in the county of Jefferson and State of Alabama,have invented a new and useful Pipe-Pit, of which the following is aspecification.

The invention relates to improvements in pipe pits.

The crane limits the capacity of the pit, and in ordinary practice theflasks are taken to a common point to be rammed and are then removed .tothe drying ovens or heaters.

The object of the present invention is to enable the flasks to be rammedover the heaters, thereby saving one handling of the flasks by thecrane, and to this extent in creasing the capacity of the pit. This hasbeen attempted before, but has usually been abandoned as impracticableas the sand falls into the pit upon the heaters, gets mixed with theashes and is wasted.

It is also an object of the invention to reduce the waste of the sand,so that the amount wasted will be absolutely immaterial.

With these and other objects in view, the invention consists in theconstruction and novel combination of parts hereinafter fully described,illustrated in the accompanying drawings, and pointed out in the claimshereto appended; it being understood that various changes in the form,proportion, size and minor details of construction, within the scope ofthe claims, may be resorted to without departin from the spirit orsacrificing any of the advantages of the invention.

In the drawings :--Figure 1 is a plan view, partly in section,illustrating the lay-out of a pair of pipe pits, constructed inaccordance with this invention. Fig. 2 is a transverse sectional view ofthe same. Fig. 3 is an enlarged plan view, illustrating the constructionof the apron and showing the same ap plied to a flask. Fig. 4 is a sideelevation of the same, partly in section. Fig- 5 is a detail perspectiveview of the apron.

Like numerals of reference designate corresponding parts in all thefigures of the drawings.

I The pipe pits 1, which are curved, are each equipped with a centrallyarranged crane 2 of the ordinary construction, and as the particularconstruction thereof does not constitute any portion of the presentinvention, a detail description thereof is deemed unnecessary. The pit 1is provided adjacent to ts inner and outer walls with curved serles ofheaters 3, forming drying tables and adapted to dry the flasks a afterthesand moldshave been made. The flasks 4:, which in this drawing arequadruple or fourway flasks, form the subject-matter of my copendingapplication, filed June 22, 1909,

Serial No. 503,704.

In order to enable the flasks to be rammed over the heaters and therebyreduce the number of movements of the crane and the consequent capacityof the pipe pit, the latter 1s equipped at its outer wall with anupwardly extending curbing 5, constructed of heavy sheet metal, such asboiler iron. The curbing 5, which is arranged in flush relation with theouter wall of the pit, preferably extends throughout the entire lengthof the same, and it is provided at its lower edge with an exteriorhorizontal flange 6, suit-ablysecured at the outer wall ofthe pit.

The horizontally projecting attachlng flange is preferably formed by acurved strip of angle iron, or other suitable mate rial, secured to themetal of the curbing at the lower portion thereof. The curbing, whichforms a continuation of the wall of the pit, extends upward asufficientdistance to prevent the sand from falling into the pit betweenthe outer wall and the heaters, and it terminates short of the tops ofthe flask and in order to prevent waste of the sand while the flasks arebeing rammed, the pit is equipped with an apron 7.

The apron 7 which is set at a slight inclination, is constructed ofboiler iron, or other suitable material, and it extends downward fromthe top of the flask 4 to the upper edge of the curbing, and projectsoutward beyond the same a slight distance, so that there will be noliability of any sand falling down between the apron and the curblng,which forms a support for the outer portion of the apron. The aprontapers upwardly, and its upper edge fits beneath the top flange 8 of theflask and is provided with approximately segmental recesses 9, whichreceive and conform to the configuration of the outer portion of themultiple flask.

The apron is equipped with a centrally arranged inwardly extendingsupporting bar 10, located over the space between the members of themultiple flask and forming a cover or closure for the said space besidessupporting the apron. The supporting bar 10, which is horizontal, hasits outer portion angularly bent to form an approximately L- shaped arm11, which is secured by rivets or other suitable fastening devices tothe upper face of the apron. The upper portion of the L-shaped arm 11 isvertical, and the outer port-ion is arranged at the same inclination asthe apron.

The pit is also equipped at its inner wall with an inner curbing 12,adapted to support the apron 7 and arranged concentric with the outercurbing and having an inner attaching flange 13, preferably consistingof a strip of angle iron, like the flange 6 hereto fore described. Theattaching flange is suitably secured at the inner wall of the pit, whichis provided with a crane-protecting curbing 14:, arranged within thespace and closed by the inner wall or curbing in parallelism with thesame, and provided at its concave face with a lower arranged flange 15and having a supporting shelf or ledge 16 at its upper edge. The lowerattaching flange 15 is constructed similar to those heretoforedescribed, and the ledge or shelf 16 is supported in a horizontalposition by an angle strip 17, arranged beneath the ledge or shelf,which is adapted to support clamps, Wedges and other removable parts ofthe pit equipment to prevent such parts from becoming lost in the sand.The curved flange or curbing 14 keeps the sand from the crane, and theinner and outer vertical flanges or curbing 5 and 12 not only preventthe sand from falling into the pit, but. operate as a guard to protectthe workmen while pouring the metal into the molds.

In practice the sand for making the molds will be arranged outside ofthe pit at both the inner and outer walls thereof, and the flasks willbe rammed while upon the heaters, the sand pitchers standing in front ofthe flask operated on and the rammers standing upon the adjacent flasks.This will obviate the necessity of providing ramming platforms andcarrying the flasks to the same to'form the sand molds, and the work ofthe crane will be lessened and the output of the pit correspondinglyincreased.

Having thus fully described my invention, what I claim as new and desireto secure by Letters Patent, is

l. A pipe pit including heaters and flasks and provided with an upwardlyextending flange or curbing located at the wall of the pit and adaptedto prevent the sand from falling 'into the pit between the said wall andthe heaters, whereby the flasks may be rammed over the heaters withoutwasting the sand, said flange or curbing also forming a guard to protectthe workmen in pouring the material. v I v 2. A pipe pitincludingheatersarranged at the inner and outer walls of the pit, flasks, and inner andouter flanges or curbing extending upward from the walls of the pit andarranged to prevent the sand from falling into the same, whereby theflanges may be rammed over the heaters.

3. A pipe pit including a crane, heaters, flasks, an inner curbingextending upward from the inner wall of the pit to prevent the sand fromfalling into the same and to provide a guard to protect the workmen inpouring the metal, and a flange or curbing arranged in spaced relationwith the said flange or curbing in position to keep the sand from thecrane.

4:. A pipe pit including a crane, heaters, flasks, an inner curbingextending upward from the inner wall of the pit to prevent the sand fromfalling into the same and to provide a guard to protect the workmen inpouring the metal, and a flange or curbing arranged in spaced relationwith the said flange or curbing in position to keep the sand from thecrane and provided at the top with a shelf or ledge adapted to supportthe removable parts of a it equipment.

5. A pipe pit inc uding heaters, flasks, an upwardly extending curbingarranged at the wall of the pit to prevent the sand from falling intothe same upon the heaters, and an apron extending across the spacebetween the flasks and the curbing to enable the flasks to be rammedover the heaters.

6. A pipe pit including heaters, flasks, an upwardly extending curbingarranged at the wall of the pit to prevent the sand from falling intothe same, and an apron extending across the space between the flasks andthe curbing and resting upon the latter.

7. A pipe pit incuding heaters, flasks, an upwardly extending curbingarranged at the wall of the pit to prevent the sand from falling intothe same, and an inclined apron extending downwardly from the flasksacross the space between the same and the curbing.

8. A pipe pit including heaters, flasks, an upwardly extending curbingarran ed at the wall of the pit to prevent the sand from falling intothe same, and an inclined apron extending across the space between theflasks and the curbing and supported by the said parts.

9. A pipe pit including heaters, flasks, an upwardly extending curbingarranged at the wall of the pit, and an upwardly tapered inclined apronextending across the space between the flasks and the curbing andarranged in front of the former to permit the flasks to be rammed overthe heaters without wasting the sand.

10. A pipe pit including heaters, flasks, and an apron adapted to fitbeneath the top flanges of the flasks and having recesses to conform tothe configuration of the same and arranged over the space between theflasks and the wall of the pit to prevent sand from falling into thelatter.

V ple flask, an inclined apron arranged at the front of the flask, and asupporting bar-extending across the top of the flask and covering thespace between the members of the same and provided with an arm having aninclined portion secured to the apron.

13. The combination with a pipe pit, of

. vertically disposed flasks arranged at the side of the pit and spacedfrom the same, and an apron located at the top of the pit and spanningthe space bet-ween theflasks and the side of the pit.

14. The combination with a pipe pit, of a flask, an apron located at thetop of the pit and spanning the space between the flask and the wall ofthe pit, and means for sup porting the apron from the flask.

15. The combination with a pipe pit, of a vertically disposed flaskarranged at the side of the pit and projecting above the wall of thesame, a curbing arranged on the wall and forming a continuation of thesame and terminating short of the upper end of the flask and an apronspanning the space be tween the flasks and the side of the pit.

In testimony, that I claim the foregoing as my own, I have heretoaiflxed my signature in the presence of two witnesses.

JAMES R. MOWVANE.

Witnesses:

M. J. BLAIR, D. W. WALLACE.

